<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="js/vue.js"></script>
</head>
<body>
    <div id="app">
        <h3 v-text="msg"></h3>
        <h3 v-pre>{{msg}}这里面的内容会直接跳过编译，不进行解析</h3>
        <h3 v-once>{{msg}}这里面的内容之后解析一次</h3>
    </div>
</body>
<script>
    var vm=new Vue({
        el:"#app",
        data:{
            msg:"不知道"
        }
    })
</script>
</html>